MODELING OF PUMPED HYDRO STORAGE STATION IN GENERATOR MODE PARALLEL WITH WIND POWER PLANT ON AUTONOMOUS ENERGY SYSTEM

• Main Author: Verbovij, A.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2021
• Subjects: stochastic; pumped storage hydro station; speed; frequency; voltage; current.; стохастична; гідроакумулювальна електростанція; швидкість; частота; напруга; струм.
• Online Access: https://ve.org.ua/index.php/journal/article/view/321

As the installed capacity of renewable energy sources based on solar and wind power plants increases, the need for backup power sources increases. The disadvantages of renewable energy sources, which limit their widespread use, are the low density of energy flows and their variability over time. This factor especially affects the production of electricity by wind and photo power plants: the schedule of energy production is probabilistic. The source of shunting power can be a storage power plant. Hydro accumulation power plants have long established themselves as relatively simple and reliable stations with maximum maneuverability - fast dialing and load relief, a wide range of regulation. A simulation model of a hydro-accumulating power plant in the generator mode of operation in parallel with a wind power plant on an autonomous network has been developed. The known model of a wind turbine with an asynchronous generator as a part of a wind diesel system in the isolated electric network which was supplemented was supplemented by blocks of the hydraulic turbine with the regulator and the synchronous generator is taken. The model is implemented in a modern mathematical package MATLAB. With the help of the created model theoretical researches of work of the wind turbine with the asynchronous generator at application of a stochastic component of wind speed were carried out. The influence of the stochastic component of wind speed on the output parameters of the asynchronous generator, such as speed, frequency, voltage, current, was analyzed. Studies of a hydraulic turbine and a synchronous generator in dynamic and quasi-static modes of operation were also carried out. The developed simulation model of PSP operation in parallel with the wind farm on the autonomous network allows to study the parameters of electric energy in stationary, transient, and emergency modes. It is proved that the stochastic component of wind speed significantly affects the speed and frequency of the network, which causes a change in the output electrical parameters that affect the entire electromechanical system. Ref.21, fig. 7.